src/iplist.h

/*-
 * Copyright (c) 1997 Brian Somers <brian@Awfulhak.org>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $FreeBSD: src/usr.sbin/ppp/iplist.h,v 1.4.62.1 2010/12/21 17:10:29 kensmith Exp $
 */

struct iplist_cur {
  struct in_addr ip;
  int pos;
  char *srcptr;
  u_long srcitem;
  u_int32_t lstart;
  u_long nItems;
};

struct iplist {
  struct iplist_cur cur;
  u_long nItems;
  char src[LINE_LEN];
};

extern int iplist_setsrc(struct iplist *, const char *);
extern void iplist_reset(struct iplist *);
extern struct in_addr iplist_setcurpos(struct iplist *, long);
extern struct in_addr iplist_setrandpos(struct iplist *);
extern int iplist_ip2pos(struct iplist *, struct in_addr);
extern struct in_addr iplist_next(struct iplist *);

#define iplist_isvalid(x) ((x)->src[0] != '\0')